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feat(licensing): Phase 4 — freeze gate snapshot against re-snapshot after patching #45

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Merged
Coding-Dev-Tools merged 1 commit into from
Jul 21, 2026
Merged

feat(licensing): Phase 4 — freeze gate snapshot against re-snapshot after patching #45

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11 changes: 10 additions & 1 deletion engraphis/cloud_license.py
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Original file line number Diff line number Diff line change
Expand Up @@ -688,10 +688,19 @@ def _verify_module_integrity():

_lock_sentinel = object()
_GATE_SNAPSHOT = gate
_GATE_LOCK_TAKEN = 0 # generation counter — prevents re-snapshot after first call


def _verify_gate_integrity():
"""Raise if ``gate`` has been monkeypatched since import."""
"""Raise if ``gate`` has been monkeypatched since first call.

Frozen on first call; re-snapshotting ``_GATE_SNAPSHOT = gate`` after
patching will be ignored once the counter is non-zero.
"""
global _GATE_SNAPSHOT, _GATE_LOCK_TAKEN
if _GATE_LOCK_TAKEN == 0:
_GATE_SNAPSHOT = gate
_GATE_LOCK_TAKEN = 1
Comment on lines +701 to +703

@chatgpt-codex-connector chatgpt-codex-connector Bot Jul 21, 2026

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P2 Badge Preserve the import-time trusted gate snapshot

Do not reassign the trusted snapshot on the first integrity check. In a production process where cloud_license.gate is replaced after import but before its first verification, this branch records the replacement as _GATE_SNAPSHOT, so the subsequent comparison succeeds instead of detecting the tampering. The prior import-time snapshot correctly treats that timing window as a modification; retain it and make only the snapshot storage immutable if that is the concern.

Useful? React with 👍 / 👎.

try:
from engraphis.licensing import _TEST_MODE_PUBKEY_OVERRIDE
if _TEST_MODE_PUBKEY_OVERRIDE:
Expand Down